Tripeak T47a 77.5mm 3-in-1 G5 Ceramic Bottom Bracket
Tripeak T47 77.5mm 3-in-1 Ceramic Bottom Bracket
One Bottom Bracket. Three Crank Standards.
The Tripeak T47 77.5mm 3-in-1 Ceramic Bottom Bracket has been developed for road bikes using the increasingly popular T47 threaded bottom bracket standard. Found on performance bikes such as the Factor Ostro VAM, VoiceVelo Echo, and selected Cervélo road models, T47 combines the serviceability of a threaded design with the stiffness demanded by today's high-performance carbon frames.
Built around Tripeak's innovative 3-in-1 Core System, a single bottom bracket supports Shimano Hollowtech II, SRAM DUB and Rotor 3D+ cranksets, making future drivetrain upgrades simpler than ever.
Featuring precision G5 Ceramic Bearings housed in CNC-machined 6061 aluminium cups and a reinforced PA+GF composite centre sleeve, the system delivers exceptional rotational efficiency, long-term durability and the secure, creak-free performance that has made T47 one of the most trusted threaded standards for modern road bikes.
Key Features
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Designed for T47 77.5mm threaded road frames
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Compatible with performance road bikes including the Factor Ostro VAM, VoiceVelo Echo and selected Cervélo models
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Innovative 3-in-1 Core System
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Compatible with Shimano HTII (24mm), SRAM DUB (28.99mm) and Rotor 3D+ (30mm)
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Premium G5 Ceramic Bearings
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Also available with P05 Precision Steel Bearings
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CNC-machined 6061 aluminium cups
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Reinforced PA+GF composite centre sleeve
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Includes all required adapters and spacers
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Standard 16-notch bottom bracket tool interface (44mm OD)
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Lightweight 81g (G5 Ceramic) or 84g (P05 Steel), excluding adapters
Why the 3-in-1 Core System?
Most bottom brackets are designed around a single crank spindle diameter. Change your crankset and you'll often need to replace the bottom bracket as well.
Tripeak's 3-in-1 Core System removes that limitation.
Using interchangeable internal sleeves and adapters, one bottom bracket accommodates:
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Shimano Hollowtech II (24mm)
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SRAM DUB (28.99mm)
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Rotor 3D+ (30mm)
That means you can upgrade or change cranksets without replacing the entire bottom bracket. Simply install the appropriate adapters and you're ready to ride.
It's a smarter system for riders and a more practical solution for workshops.
Why Choose Ceramic Bearings?
Ceramic bearings are designed to reduce rotational resistance while maintaining exceptional durability.
Tripeak's ceramic bottom brackets use G5-grade ceramic balls running on precision-machined hardened steel races. The result is exceptionally smooth rotation, low friction and consistent performance in all riding conditions.
For riders who prefer a steel bearing option, the same bottom bracket is also available with Tripeak's precision P05 Steel Bearings, manufactured to extremely tight tolerances for excellent durability and smooth running.
Whether you're racing, training or simply looking for the most refined drivetrain possible, both options are engineered to deliver long-lasting performance.
Precision Engineering
Performance isn't achieved through ceramic balls alone.
Every Tripeak bottom bracket is manufactured to exceptionally tight tolerances, ensuring accurate bearing alignment and smooth operation from the moment it's installed.
The CNC-machined 6061 aluminium cups provide excellent strength and durability, while the reinforced PA+GF composite centre sleeve keeps weight low and helps protect the bearings from contamination. Together they create a rigid, reliable interface between the frame and crankset.
Why Choose T47?
T47 has quickly become the threaded standard of choice for many premium road bike manufacturers. It combines the security and serviceability of a threaded bottom bracket with the larger shell diameter required by modern carbon frame design.
The result is a stiff, reliable interface that helps eliminate movement and the creaking often associated with press-fit systems, while remaining straightforward to install and service.
Compatibility
Frame Standard
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T47 Threaded
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Shell Diameter: 47mm
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Shell Width: 77.5mm
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Road Bike
Commonly found on performance road bikes including:
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Factor Ostro VAM
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VoiceVelo Echo
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Selected Cervélo road models
Crank Compatibility
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Shimano Hollowtech II (24mm)
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SRAM DUB (28.99mm)
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Rotor 3D+ (30mm)
Included in the box:
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2 × 30mm adapters
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2 × 28.99mm adapters
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1 × 28.99mm drive-side spacer
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2 × 24mm adapters
Technical Specifications
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Frame Standard: T47
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Shell Diameter: 47mm
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Shell Width: 77.5mm
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Bearing Options: G5 Ceramic or P05 Steel
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Cup Material: CNC Machined 6061 Aluminium
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Centre Sleeve: PA+GF Composite
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Tool Interface: 16-Notch
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Outside Diameter: 44mm
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Weight:
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G5 Ceramic: 81g (without adapters)
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P05 Steel: 84g (without adapters)
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Colour: Black
Why We Stock It
The Tripeak T47 3-in-1 Bottom Bracket combines the proven reliability of the T47 threaded standard with the flexibility of Tripeak's innovative 3-in-1 Core System. Rather than locking you into a single crank standard, it allows you to move between Shimano, SRAM and Rotor cranksets without replacing the bottom bracket. Add premium ceramic bearings, precision CNC machining and future-proof compatibility, and it's one of the most versatile upgrades available for today's high-performance road bikes.
Proven at the Highest Level
Tripeak components are trusted by riders competing at the highest level of professional cycling, including the XDS Astana Team and Lidl–Trek. Developed to meet the demands of elite racing, the 3-in-1 Core System combines race-ready efficiency with the flexibility modern riders expect.